X13 Anti-monitoring Anti-GPS Locator Detector Tag-Security Display Holders General Compatible with OPPO: A55

General Compatible with OPPO:  A55 5G

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X13 Anti-monitoring Anti-GPS Locator Detector Tag-Security Display Holders General Compatible with OPPO: A551. Material: PC, electronic components 2. Function: anti location, anti eavesdropping, anti candid photography, phone eavesdropping, anti long distance eavesdropping, anti pinhole video 3. Signal detection range: 5 cm 10 meters 4. Built in battery: 400mAh lithium battery 5. Working hours: 24 hours 6. Laser detection, can accurately detect all cameras 7. Small size, easy to carry 8. Six levels of signal strength adjustment, you can choose according to